Role of Nanoscale Precipitates on the Enhanced Magnetostriction of Heat-Treated Galfenol (${\mathrm{Fe}}_{1\ensuremath{-}x}{\mathrm{Ga}}_{x}$) Alloys

Role of Nanoscale Precipitates on the Enhanced Magnetostriction of Heat-Treated Galfenol ( ${Fe}_{1 - x} {Ga}_{x}$ ) Alloys

H. Cao, P. M. Gehring, C. P. Devreugd, J. A. Rodriguez-Rivera, J. Li, and D. Viehland

Phys. Rev. Lett. 102, 127201 – Published 25 March 2009; Erratum Phys. Rev. Lett. 105, 119904 (2010)

Abstract

We report neutron diffuse scattering measurements on highly magnetostrictive ${Fe}_{1 - x} {Ga}_{x}$ alloys ( $0.14 < x < 0.20$ ) with different thermal treatments. This diffuse scattering scales with magnetostriction and exhibits asymmetric peaks at the (100) and (300) reciprocal lattice positions that are consistent with the coexistence of short-range ordered, coherent nanometer-scale precipitates embedded in a long-range ordered, body-centered cubic matrix. A large peak splitting is observed at (300) for $x = 0.19$ , which indicates that the nanoprecipitates are not cubic and have a large elastic strain. This implies a structural origin for the enhanced magnetostriction.

Received 10 May 2008

DOI:https://doi.org/10.1103/PhysRevLett.102.127201

Erratum

Erratum: Role of Nanoscale Precipitates on the Enhanced Magnetostriction of Heat-Treated Galfenol ( ${Fe}_{1 - x} {Ga}_{x}$ ) Alloys [Phys. Rev. Lett. 102, 127201 (2009)]

H. Cao, P. M. Gehring, C. P. Devreugd, J. A. Rodriguez-Rivera, J. Li, and D. Viehland

Phys. Rev. Lett. 105, 119904 (2010)

Authors & Affiliations

H. Cao¹, P. M. Gehring², C. P. Devreugd¹, J. A. Rodriguez-Rivera³, J. Li¹, and D. Viehland¹

¹Department of Materials Science and Engineering, Virginia Tech, Blacksburg, Virginia 24061, USA
²NIST Center for Neutron Research, NIST, Gaithersburg, Maryland 20899-6100, USA
³Department of Materials Science and Engineering, University of Maryland, College Park, Maryland 20742, USA

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Vol. 102, Iss. 12 — 27 March 2009

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Physical Review Letters

Role of Nanoscale Precipitates on the Enhanced Magnetostriction of Heat-Treated Galfenol (Fe1−xGax) Alloys

H. Cao, P. M. Gehring, C. P. Devreugd, J. A. Rodriguez-Rivera, J. Li, and D. Viehland

Phys. Rev. Lett. 102, 127201 – Published 25 March 2009; Erratum Phys. Rev. Lett. 105, 119904 (2010)

Abstract

Erratum

Erratum: Role of Nanoscale Precipitates on the Enhanced Magnetostriction of Heat-Treated Galfenol (Fe1−xGax) Alloys [Phys. Rev. Lett. 102, 127201 (2009)]

H. Cao, P. M. Gehring, C. P. Devreugd, J. A. Rodriguez-Rivera, J. Li, and D. Viehland

Phys. Rev. Lett. 105, 119904 (2010)

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Role of Nanoscale Precipitates on the Enhanced Magnetostriction of Heat-Treated Galfenol ( ${Fe}_{1 - x} {Ga}_{x}$ ) Alloys

Erratum: Role of Nanoscale Precipitates on the Enhanced Magnetostriction of Heat-Treated Galfenol ( ${Fe}_{1 - x} {Ga}_{x}$ ) Alloys [Phys. Rev. Lett. 102, 127201 (2009)]